A study was conducted to develop and apply a low-cost process for assession the effect on travel demand of a less-than-optimal design for proposed freeway interchanges on I-476 in Delaware County, Pennsylvania. The principal strength of the procedure developed lies in its computational simplicity. It is primarily manual and although it does not require the excessive computer costs associated with the usual set of transportation planning models, it produces the detailed information required for such an analysis. The process relies on travel demand, trip length, and service provided for each trip movement to isolate possible impacts. The diversions expected to result form the constrained interchange designs are then determined based on the conditions of the surrounding network. For the two interchanges considered in the study, the process provided detailed information not usually associated with typical planning models. Although little effect on demand was anticipated at either interchange, the information generated was used for incorporating design revisions at one of the locations analyzed to eliminate deficiencies in capacity. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Maps; References; Tables;
  • Pagination: pp 81-88
  • Monograph Title: Transportation system analysis
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00195977
  • Record Type: Publication
  • ISBN: 0309028221
  • Files: TRIS, TRB
  • Created Date: Sep 15 1979 12:00AM